The 24-70mm II scores 18MPix on the 5D3 compared to Nikon's 24-70mm which scores a 15Mpix on Nikon's similar resolution D600. Imagine what the 24-70mm Mark II could do on a 36MP body. .
And no one could tell the difference unless they were arm-chair photogs that pixel peep everything just to debate it on a forum instead of actually reading and doing things that make them a better photographer.
Only photographers talk about it with other photographers.
More like people with nothing better to do than debate pedantic bs. Photographers talk about scenes, how they captured something, how something felt, basically the art of photography. Lighting has far more of a real world value than debating about bodies and points only valid on DxO.
I have 2 world class photogs for friends here and they would both roll their eyes over stupid crap like this and go back to actually making good images. One shoots a Nikon D4 and Leica 240, the other Canon 5D MKII. When I asked about upgrading to the D800 with the Nikon guy he just laughed. I asked the Canon guy about getting a 5D MKIII or 1DX and he said it was not needed for his studio work.